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All Patents of Type: steam check valves | |||||
Number | Date | Patentee | Title | Type | |
6,324 | Apr. 17, 1849 | G. McKay | Piston-valve cut-off | steam check valves | |
25,005 | Aug. 09, 1859 | B. Fitts | Improvement in governor-valves | steam check valves | |
30,138 | Sep. 25, 1860 | G. Frost | Cut-off valve for steam-engines | steam check valves | |
134,548 | Jan. 07, 1873 | J.C. Hoadley | Check-Valves | steam check valves | |
D45,941 | Jun. 16, 1914 | L. Kassander | Boiler Check Casting | steam check valves |